Global Patent Index - EP 0879991 A3

EP 0879991 A3 1999-04-21 - Illuminating system

Title (en)

Illuminating system

Title (de)

Beleuchtungssystem

Title (fr)

Système d'illumination

Publication

EP 0879991 A3 (EN)

Application

EP 98108588 A

Priority

  • JP 12234397 A
  • JP 22499297 A
  • JP 4496098 A

Abstract (en)

[origin: EP0879991A2] The illuminating system comprises a linear light source (1), and a light guide member (3) with the light source placed beside a side face thereof, in which the top face and the bottom face of the light guide member are generally parallel to each other and in which slits (31) made of a different material or air are arranged at specified intervals in the top face of the light guide member. Therefore, most of light propagating within the light guide member is totally reflected at the slits formed in the light guide member so as to be outputted from the light guide member, thereby illuminating a reflecting plate. Its reflected light is incident again on the light guide member and the resulting totally reflected light is transmitted to the observer's side at places other than the slits, while the observer's field of view is not obstructed at the slit portions. <IMAGE>

IPC 1-7 (main, further and additional classification)

F21V 8/00

IPC 8 full level (invention and additional information)

F21V 8/00 (2006.01); G02B 6/00 (2006.01); G02F 1/13357 (2006.01)

CPC (invention and additional information)

G02B 6/0018 (2013.01); G02B 6/0028 (2013.01); G02B 6/0031 (2013.01); G02B 6/0038 (2013.01); G02B 6/0048 (2013.01); G02B 6/005 (2013.01); G02B 6/0055 (2013.01); G02B 6/0036 (2013.01); G02B 6/0046 (2013.01); G02B 6/0053 (2013.01); G02B 6/0068 (2013.01); G02F 2001/133616 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family

EP 0879991 A2 19981125; EP 0879991 A3 19990421; KR 19980086997 A 19981205; US 2001019479 A1 20010906; US 6379017 B2 20020430